Home / 20,015.20-29,997.60-10,157.20

Finding the Fourth Proportional to 20,015.20, 29,997.60 and 10,157.20

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Solution

The fourth proportional to 20,015.20, 29,997.60 and 10,157.20 is: 15,223.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.20 : 29,997.60 = 10,157.20 : x
  2. Step 2: Convert to fraction form
    20,015.20/29,997.60 = 10,157.20/x
  3. Step 3: Cross multiply
    20,015.20x = 29,997.60 × 10,157.20
  4. Step 4: Simplify right side
    20,015.20x = 304,691,622.72
  5. Step 5: Solve for x
    x = 304,691,622.72/20,015.20
  6. Step 6: Final answer
    x = 15,223.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.